2 sentences

1. 他历经社会磨炼，已经深谙人情世故。

   tā lì​jīng shè​huì mó​liàn, yǐ​jīng shēn'ān rén​qíng shì​gù.

   Having gone through the trials of society, he is well-versed in the ways of the world.

   Source: Dong Chinese Dictionary

2. 他为人处世圆滑世故，深得老板的赏识。

   tā wéi​rén chǔ​shì yuán​huá shì​gu, shēn​dé lǎo​bǎn de shǎng​shí.

   He is sophisticated and worldly-wise in his conduct, which has earned him the boss's appreciation.

   Source: Dong Chinese Dictionary